initial update tlv_generation code

lib/gtp/support/README

@@ -0,0 +1,12 @@
+
+* Install Python-docs 
+user@host ~/Documents/git/cellwire/lib/gtp/support$ \
+    pip install python-docx
+
+* Change the format of standard specification 
+  from 29274-d80.doc to 29274-d80.docx 
+  using Microsoft Office 2007+
+
+* Generate TLV support files
+user@host ~/Documents/git/cellwire/lib/s1ap/support$ \
+    python gtpv2_tlv_gen.py -f 29274-d80.docx -o ..

lib/gtp/support/gtpv2c_tlv_gen.py

@@ -0,0 +1,137 @@
+#
+# Copyright (c) 2017, CellWire Group
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this
+#    list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+#    this list of conditions and the following disclaimer in the documentation
+#    and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+from docx import Document
+import re, os, sys, string
+import getopt
+
+version = "0.1.0"
+
+verbosity = 0
+filename = ""
+outdir = './'
+
+FAIL = '\033[91m'
+INFO = '\033[93m'
+ENDC = '\033[0m'
+
+def printDebug(string):
+    if verbosity > 0:
+        print string
+
+def printInfo(string):
+    sys.stderr.write(INFO + string + ENDC + "\n")
+
+def printFail(string):
+    sys.stderr.write(FAIL + string + ENDC + "\n")
+    sys.exit(0)
+
+
+def usage():
+    print "Python adding prefix for asn1 v%s" % (version)
+    print "Usage: python asn1prefix.py [options]"
+    print "Available options:"
+    print "-d        Enable script debug"
+    print "-f [file] Input file to parse"
+    print "-o [dir]  Output files to given directory"
+    print "-h        Print this help and return"
+
+try:
+    opts, args = getopt.getopt(sys.argv[1:], "df:ho:", ["debug", "file", "help", "output"])
+except getopt.GetoptError as err:
+    # print help information and exit:
+    usage()
+    sys.exit(2)
+
+for o, a in opts:
+    if o in ("-d", "--debug"):
+        verbosity = 1
+    if o in ("-f", "--file"):
+        filename = a
+    if o in ("-o", "--output"):
+        outdir = a
+        if outdir.rfind('/') != len(outdir):
+            outdir += '/'
+    if o in ("-h", "--help"):
+        usage()
+        sys.exit(2)
+
+if os.path.isfile(filename) and os.access(filename, os.R_OK):
+    in_file = open(filename, 'r') 
+else:
+    printFail("Cannot find file : " + filename)
+
+document = Document(filename)
+
+ie_table = ""
+msg_table = ""
+
+for table in document.tables:
+    cell = table.rows[0].cells[0]
+    if cell.text.find('IE Type value') != -1:
+        ie_table = table
+        printInfo("[Information Element Table]")
+        printInfo("...done");
+    if cell.text.find('Message Type value') != -1:
+        msg_table = table
+        printInfo("[Message Table]")
+        printInfo("...done");
+
+printInfo("[Message Type]")
+msg_list = {}
+for row in msg_table.rows[1:]:
+    msg_list[row.cells[1].text] = { "type": row.cells[0].text }
+    printDebug(row.cells[1].text + " " + "type:" + row.cells[0].text)
+printInfo("...done")
+
+printInfo("[Information Element Type]")
+ie_list = {}
+for row in ie_table.rows[1:-5]:
+    if row.cells[1].text.find('Reserved') != -1:
+        continue
+    ie_list[row.cells[1].text] = { "type": row.cells[0].text }
+    printDebug(row.cells[1].text + " " + "type:" + row.cells[0].text)
+printInfo("...done")
+            
+
+# Data will be a list of rows represented as dictionaries
+# containing each row's data.
+#data = []
+
+#keys = None
+#for i, row in enumerate(tlv_table.rows):
+#    text = (cell.text for cell in row.cells)
+#
+#    # Establish the mapping based on the first row
+#    # headers; these will become the keys of our dictionary
+#    if i == 0:
+#        keys = tuple(text)
+#        continue
+#
+#    # Construct a dictionary for this row, mapping
+#    # keys to values for this row
+#    row_data = dict(zip(keys, text))
+#    data.append(row_data)
+#
+#print data